Demountable wheel



y 4, 1935. w. K. DODGE 2,001,242

DEMOUNTABLE WHEEL Filed June 20, 1952 2 Sheets-Sheet 1 IN V EN TOR.

WILL 52006];

A TTORNEYS.

May 14, 1935. w, K, E

DEMOUNTABLE WHEEL Filed June 20, 1932 2 Sheets-Sheet 2 INVENTOR. mLL f1. DODGE ATTORNEYS.

Patented May 14, 1935 I UNITED S AT S PATENT OFFICE? DEMOUN'I'ABLE WHEEL Will K. Dodge, Upper Lake, Calif. I I ,Application June 20, 1932, Serial No. 618,394

4 Claims. (01. 301-9) My"invention relates to improvements in demountable wheels, and it consists of the combinations, constructions and arrangements hereinafter described and claimed.

An object of my invention is to provide a demountable wheel for automobiles and the like in which the turning of one nut will first release the locking mechanism and a further turning of the same nut will free the demountable portion of the wheel from the hub. The: demountable portion and the hub make use of cooperating mutilated or segmental threads, and this permits the demountable portion to be rotated through a small arcwith respect to the hub and this move- 1 ment will free the threads on the demountable wheel portion from those on the hub and then the demountable portion may be withdrawn from the hub by an axial movement.

A further feature of the invention lies in the fact that the same mechanism that is used for securing the demountable portion to the hub is also used in securing the rim sections together. After the demountable wheel portion has been removed, the means can be actuated for freeing the rim sections. The rim is split annularly, and when the two sections are freed, they can be readily removed from the tirewithout the necessity of first collapsing the rim, as is now the practice.

Other objects and advantages will appear in the following specification, and the novel fea-' tures of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings forming a part of this application, in which 1 Figure '1 is a vertical section through the entire device; V

Figure 2 is a view similar to Figure 1 on a smaller scale and shows some of the parts in elevation;

- Figure 3 is a view similar to Figure 2, but on a larger scale and shows certain parts in elevation;

Figure 4 is a front view of the deviceportion's being broken away; and V Figure 5 is a section along the line 5-5 of Figure 3 and shows the wheel and hub portions in a position for removal of the wheel from the hub.

In carrying out my invention, I provide a hub, indicated generally at I, and this hub may form the mechanism for the front wheel of an automobile or the rear wheel. If the device is used on the non-driving wheel, the hub will idle on an axle 2, asshown. If the device is used on the driving wheel, whether front or rear, the hub will be keyed to, the axle so as to be rotated thereby.

The hub [has a cylindrical portion 3 which is provided with. segmental threads 4 on its outer surface. Figure 3 shows how the segmental threads are inclined and how a space 5 is provided between the segmental portions.

. A demountable wheel portion, indicated generally at 6, is provided with a hub cap. boxing l.

provided with inwardly-extending threads 59. The threads 9 are segmental so as to cooperate with the threads 4 and be quick acting. When the hub cap boxing is secured to the huh. I, the threads 9 are first aligned with the spaces 5 and then the boxing l is moved axially until the threads 4 and 9 are in proper position, whereupon a rotational movement will cause, the threads to mesh. I

The boxing l removablycarries two rimsections l and H. I

The sections have annular grooves l2 adjacent to their abutting surfaces and these grooves form a dove-tailed groove for receiving a portion of atire casing l3. If desired-the tire can be reinforced by rods or bands l4. 1

The rim section in has a flange l5, and this fiange is designed to abut against a wheel support IE, which formsa part of the hub structure i. The flange l has openings I! for receiving projections 18, carried by the wheel support Hi. When the projections I8 are received in the openings H, the rim section ill will, be secured to the wheel so as to rotate therewith. v'I'hese pro,-

jectionsare necessary,especially when the hub I constitutes the driving member.

The. rim section In also has L-shaped fingers l9 that are designed to be received by inclined planes 20, (see Figure 2), disposed on the outer surface of the hub cap boxing l. The rim sectlon H has an inwardly-extending flange 2|, and

hub cap can be turned for causing the threads 4 and 9 to mesh. The hub cap 1 must be ro-' tated with respect to the hub I in order to lock the hub cap'to the hub. The threads 4 and 9 are inclined at a different angle to the inclined cams 20, and, therefore, a tightening of the hub cap on the hub will free the fingers I I9 from the cam surfaces 20. However, the rim sections are still held together because the flange I5 is bearing against the portion l6, which is integral with the cylinder 3 and the threads 4.

The means for rotatingand locking the hub cap 1 will now be described. In Figures 1, 3 and 4 4; I show the hub cap I as having a recess 23. This recess is preferably of the shape shown in Figure 4. A bolt 24 is mounted in an openby rivets 38. The pawl has teeth'3l :that normal- I 1y engage with teeth 32 on the end of the cylinder 3. pawl 29 can be rotated in a clockwise direction,

but prevent the pawl from rotating ina counterclockwise direction. It will be" seen that the pawl will be moved with the hub cap boxing Ti so that when the boxing is secured in locked position, the pawl will engage with the ratchet.

teeth 32 and will prevent return movement.

;;"..'I-he.:means for. freeing the pawl from the ratchet comprises-the bolt and the cam 21. When freeing the wheel from the hub, the head 26 of. the-bolt is' turned (in a counterclockwise direction when lookingat Figwe 4." This movement will swing with the bolt-the cami'l, and the' cam portions 28 will engage with theends ofuthe pawl 29 and will swing the ends .free otthe ratchet teeth in the. manner shown in Figure 3i .When the pawl is freed: from the ratchet teethythe bolt head 26 is contacting with the'surfaces 33 of the recess 23. A further movement of the bolt-26in a'counterclockwise direction will cause the hub cap box 1 to-rotate with respect to-the hub i and this will free the threads 9 from the threads 4; The threads 9 will be positioned in the passages 5 when the demountable portion :is ready to beremoved' ax ialIy' -from the hub I. 'Itwillbe noted that a freeing movement of the hub cap from the hubwillcause the cap to engage with the fingers H by" means of the inclined cam surfaces 2i3and in this way, the rim sections are secured together and are removed with the hub cap. Subsequently, the rim: sections can be freed'fromeach other by: rotating the hubcap so'as torelease the fingers 19.: T

"When mounting'the demountablewhe'e'l portion inplaca'the threads 23 areregistered withlthe passage 5 and then the portiomis moved axially into position. This will cause'theprojections 18 to enter theopenings- H. fThebolt 2 lzisfn'ow r otatedand its initial movementwill free the foam fliromthe pawlfifi and permitlthe ends of. the pawl 139 return to normal :positiomlwhere they ther movement of-the' bolt head 26 in aclockwise direction; will causethe head to engagewith the surfaces 34 i ;the recess fiend torotate the hub cap boxing with respect to the cylinder 3. This :will causethethreadsyfi and 9 to mesh-and to locl wthe demountable wheelportion to the hub. Asalready stated the pawl 29 prevents r t n-mov m .i-sp ne ,5 a e u ed for preventing the cam 22 from accidentallymoving beneath the pawl 29. j I. Thedevice canbe used for holding an airplane propeller'inplace; The hub I in this instance Would-constitute the propelleryshait and the propeller would taketheplaceyof the flangeiS; The "hub, cap boxing l would constitutethe nut holding the propeller in place and the pawl 28 andcam il wouldbeused'in the samemanne forlocking thenut-against turning.-

While I have shown only, the preferredform ofmy invention, it should be understood, that Ya ioi ss hanse or mo i cati m y be made within the scope of the appended claims without departingjrom the spirit of the invention.

The teeth are inclined .so that the;

ing 25 in the hub cap 1, and the head 26 of I claim: v

1. A demountable wheelcomprising a hub having segmental threads, a demountable wheel portion having segmental threads for meshing with the first. named threads when rotated -with respect ithereto, ratchet teethg onthelhubna pawl carried by the demountable portion and engaging -;with the teeth when the portion is rotated for securing the wheel from return movement, a cam 'rockably carried by the portion for freeing the pawl from the ratchet teeth, and means for rock-,-

ing the cam and rotating the demountable wheel portion, the initial moving of the means rocking the cam and freeing the pawl, and a further movement of the means in the same direction rotating the demountable 'wheel por'tion and freeing ,the threads for-permitting the removal of the demountable. wheel zporti'on from-thehiib.

2. A demountable wheelcomprising a hub having segmental threadsliinclined in one direction, a demountable member having segmental-threads for meshing with the-nfirstnamed threads when the member is rotated :with respect to the hub; a rim split annularlyfor forming a'n inboard-and an outboard rim-half, both ihalves normally b'e' ing carried by the. demountable mem'berfa" flange on the member for engaging. with the outboard rim half, ifingers integral with :the -inboard' rim half andinormallyengaging with the demountable'member, cooperating means for locking the inboard rim-:half toithe hub for preventing rotaiion between the two,.said member having finger engaging cam surfaces'inclined oppositely to the threads-for freeing the-fingers when the'member is rotated: in locking it mule hub, said hubhavmgqaj support-engaging with the inboard rim portion. 1-, a 3. "A demountable wheelcomprising ahub havmg segmental :threads, a' demountable "portion having segmental threads for meshing-with the first. named: threads. when the portion is first moved axially .alongthe hub and then' is" mate's with-respect, thereto;.-said hub having "an annular row of ratchet teeth thereon, a pawl ca-rr'ie dby said portion andv :being movable over- 5 the teeth when the. portion is rotated intolocked position, said pawlengaging :with said teeth and prevent mg return movement, a cam rockably carried by said portion and. being movable with" respect to said :pawl for disengagin'gthe'pawl from the teeth, and rotating means for first causing the cam to disengage the pawl and-thenuponiiirther continuous movement in the same -di1ection rotating the portion to freeits threads from- "the hub hre sq fl a" demountable wheel, a segmentally threaded v hub having .-a face, .plate; :a segmentally threaded v .demountab1ei portion rotatable with respect to the hub for causing. the threads to ,rnesh with. the. hub .threads, .a two ipieee rim cii cuniferentially divided, said portion ,havinga flane'eir 'bearirielaeai t neg m-.- fine .s can'ied'by the other rim piece, saidportionjhaving cam surfaces engaged bytheffingr fin-,- eline'd oppositely to the threads on", said p rtion, mean -holding the finger carrying jnm w rotating'withrespect to'the plate, Isaidpfition when rotated into locked "position-f eingthe fingers from the cams', whereby 'the rim pieces areheld in -abuttingrelation-by thedlange'afid plategand means for lockingthe portion 1mm rotating into a freed position with respect to the i L'WIFLL'TK. bones; 

